Scholars of Buddhism, comparative religion, and folklore need the original numbering system. Cowell’s translation preserves the standard Jataka numbers (e.g., Jataka No. 1: Apaṇṇaka ). PDFs allow for full-text searching (Ctrl+F) to find specific animal motifs or parables.
If you are looking for an analytical report or summary rather than the full text: The Buddhist Jataka Stories (Analytical Survey) 550 jataka stories in english pdf
If you download a today, there is a 99% chance you are downloading the translation done by a team of Cambridge scholars led by Edward Byles Cowell between 1895 and 1913. Scholars of Buddhism
If you are looking for specific stories, these are among the most widely read: The Vessantara Jataka 550 jataka stories in english pdf
